User's Manual

Last change:
2013-12-10
Copyright @ Shenyang
Torch-Bigtide Digital Tech.,Co.,Ltd
HL1530
Page 23 of 25
7.2.3 Appearance specification
Table 7.3
Defect pattern Condition Criteria
d<0.2mm
Allowed
0.2mm ≤d<0.3mm
≤10 points
0.3mm ≤d≤0.5mm ≤3 points
Dot shape
d>0.5mm
0 point
W<0.05mm
L<0.7mm
Allowed
0.7mm ≤L≤1.0mm ≤4 points
0.05mm ≤W≤0.1mm
L>1.0mm
Impure ingredient
Stains
Dust
Line shape
W>0.1mm
0 point
d<0.2mm
Allowed
0.2mm ≤d≤0.5mm ≤2 points
Bubbles, Wrinkles, Dent
d>0.5mm
0 point
S≤0.2mm2
Allowed
Scratch(Surface of polarizer)
S>0.2mm2
0 point
Note1: Definition of symbols is as follows.
d: Average diameter
(This diameter is the average length of a long axis and a short axis in each defect pattern.)
W: Width, L: Length, S: Area
Note2: Inspection conditions are as follows.
Table 7.4
Temperature
25±5℃
Inspection viewing distance 20cm (The distance between the inspector’s eye and screen.)
0°≤θR≤45°, 0°≤θL≤45°
Inspection direction
0°≤θU≤45°, 0°≤θD≤45°
Illumination 700lx(at an inspection desk surface)